Diploma in Operating Systems - Revised

In this module, you will be introduced to Operating Systems (OS). You will learn about where an OS occurs in the layers of a computer system. You will learn about Resource management and Hardware Abstraction. You will learn about different operating system types. You will learn about hardware addresses and the three types of addresses you can use.

In this module, you will be introduced to processes and system calls. You will learn about an Operating Systems Structure and the modules of the structure. You will learn about the CPU and how it is probably the most critical resource in the computer system. You will learn about the Central Processing Unit (CPU) and how the CPU is shared between different applications. You will learn about multiprogramming and multitasking and how these methods work differently to sharing a single CPU.

In this module, you will be introduced to memory management in a computer system. You will learn about the single contiguous model and the partition model for memory management. You will learn about virtual memory and how the virtual address is mapped to a physical one.

In this module, you will be introduced to segmentation and how segmentation is more logical in dividing up a process compared to virtual memory. You will learn how segmentation maps to physical addresses. You will learn about the structure of the xv6 operating systems memory and about the booting process when a computer system is powered on.

You must score 80% or more to pass this assessment.

In this module, you will be introduced to processes in a computer system. You will learn what a process is and how a process in stored in RAM. You will learn about the metadata the kernel keeps about each process. You will learn what the metadata the kernel keeps contains and does for your process. You will learn about how the operating system creates a process.

In this module, you will learn about interrupts in an operating system, the different types of interrupts and how a system handles a hardware interrupt.

In this module, you will be introduced to software interrupts, and how they are used for implementing system calls. You will learn about how system calls work and about some of the different types of system calls you can use.

In this module, you will be introduced to process scheduling. You will learn about the two type or classifications for processes. You will learn about first come first serve scheduling and its advantages and disadvantages. You will learn about more scheduling techniques such as Shortest job first and Round Robin scheduling and what they involve. You will learn about priority based scheduling and about setting priorities for your processes.

In this module, you will learn about scheduling in a Linux operating system. You will learn about how Linux classifies processes into real time and normal processes. You will learn about the different schedulers Linux has used in their systems and how they work. You will learn about Completely fair scheduling (CFS) the main scheduler used in Linux currently. You will learn about how the CFS works and selects processes for running.

You must score 80% or more to pass this assessment.

In this module, you will be introduced to Inter Process Communication (IPC) for processes communicating and sharing data with each other. You will learn about the main ways for processes to share data and communicated with each other. You will learn about Process synchronizations and the Critical section. You will learn about accessing the critical section using interrupts and building you won solution.

In this module, you will learn about the bakery algorithm another method for accessing the critical section. You will learn about how hardware can help with accessing the critical section. You will learn about the Test & set Instruction, how Intel doesn’t support it and has its own xchg instruction. You will learn about Spinlocks, Mutexes and Semaphores and how they help with accessing the critical section.

In this module, you will gain extensive knowledge on deadlocks and be able to describe the four conditions necessary for a deadlock to occur. This module will also explain how deadlocks are detected.

In this module, you will learn about the role of paralyzation in operating systems and how threads are used in paralyzation. This module will also inform you on how to distinguish between threads and processes and describes how threads can be created and destroyed.

In this module, you will learn about different security goals for an operating system. You will learn about access control techniques and the components for developing an access control system. You will also learn about information flow policies, leaky states, and the Biba and Bell-LaPadula models.

In this module you will learn about stacks and buffer overflows. You will become knowledgeable on how to use buffer overflows and techniques to overcome buffer overflow vulnerability. You will also learn about various aspects of libc.

You must score 80% or more to pass this assessment.